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b77209e0 PA |
1 | /* Multi-process control for GDB, the GNU debugger. |
2 | ||
b811d2c2 | 3 | Copyright (C) 2008-2020 Free Software Foundation, Inc. |
b77209e0 PA |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
6c95b8df | 21 | #include "exec.h" |
b77209e0 PA |
22 | #include "inferior.h" |
23 | #include "target.h" | |
24 | #include "command.h" | |
06da564e | 25 | #include "completer.h" |
b77209e0 PA |
26 | #include "gdbcmd.h" |
27 | #include "gdbthread.h" | |
28 | #include "ui-out.h" | |
76727919 | 29 | #include "observable.h" |
6c95b8df PA |
30 | #include "gdbcore.h" |
31 | #include "symfile.h" | |
268a13a5 | 32 | #include "gdbsupport/environ.h" |
c82c0b55 | 33 | #include "cli/cli-utils.h" |
be34f849 | 34 | #include "continuations.h" |
6ecd4729 PA |
35 | #include "arch-utils.h" |
36 | #include "target-descriptions.h" | |
47902076 | 37 | #include "readline/tilde.h" |
5ed8105e | 38 | #include "progspace-and-thread.h" |
b77209e0 | 39 | |
8e260fc0 TT |
40 | /* Keep a registry of per-inferior data-pointers required by other GDB |
41 | modules. */ | |
42 | ||
6b81941e | 43 | DEFINE_REGISTRY (inferior, REGISTRY_ACCESS_FIELD) |
6c95b8df PA |
44 | |
45 | struct inferior *inferior_list = NULL; | |
b77209e0 PA |
46 | static int highest_inferior_num; |
47 | ||
f67c0c91 | 48 | /* See inferior.h. */ |
491144b5 | 49 | bool print_inferior_events = true; |
b77209e0 | 50 | |
3a3fd0fd PA |
51 | /* The Current Inferior. This is a strong reference. I.e., whenever |
52 | an inferior is the current inferior, its refcount is | |
53 | incremented. */ | |
6c95b8df PA |
54 | static struct inferior *current_inferior_ = NULL; |
55 | ||
b77209e0 PA |
56 | struct inferior* |
57 | current_inferior (void) | |
58 | { | |
6c95b8df PA |
59 | return current_inferior_; |
60 | } | |
61 | ||
62 | void | |
63 | set_current_inferior (struct inferior *inf) | |
64 | { | |
65 | /* There's always an inferior. */ | |
66 | gdb_assert (inf != NULL); | |
67 | ||
3a3fd0fd PA |
68 | inf->incref (); |
69 | current_inferior_->decref (); | |
6c95b8df PA |
70 | current_inferior_ = inf; |
71 | } | |
72 | ||
089354bb SM |
73 | private_inferior::~private_inferior () = default; |
74 | ||
0550c955 | 75 | inferior::~inferior () |
b77209e0 | 76 | { |
0550c955 PA |
77 | inferior *inf = this; |
78 | ||
e0ba6746 | 79 | discard_all_inferior_continuations (inf); |
6c95b8df | 80 | inferior_free_data (inf); |
3f81c18a VP |
81 | xfree (inf->args); |
82 | xfree (inf->terminal); | |
6ecd4729 | 83 | target_desc_info_free (inf->tdesc_info); |
0550c955 PA |
84 | } |
85 | ||
86 | inferior::inferior (int pid_) | |
87 | : num (++highest_inferior_num), | |
88 | pid (pid_), | |
9a6c7d9c | 89 | environment (gdb_environ::from_host_environ ()), |
0550c955 PA |
90 | registry_data () |
91 | { | |
0550c955 | 92 | inferior_alloc_data (this); |
5b6d1e4f PA |
93 | |
94 | m_target_stack.push (get_dummy_target ()); | |
b77209e0 PA |
95 | } |
96 | ||
b77209e0 PA |
97 | struct inferior * |
98 | add_inferior_silent (int pid) | |
99 | { | |
0550c955 | 100 | inferior *inf = new inferior (pid); |
b05b1202 PA |
101 | |
102 | if (inferior_list == NULL) | |
103 | inferior_list = inf; | |
104 | else | |
105 | { | |
0550c955 | 106 | inferior *last; |
b05b1202 PA |
107 | |
108 | for (last = inferior_list; last->next != NULL; last = last->next) | |
109 | ; | |
110 | last->next = inf; | |
111 | } | |
b77209e0 | 112 | |
76727919 | 113 | gdb::observers::inferior_added.notify (inf); |
a79b8f6e | 114 | |
6c95b8df PA |
115 | if (pid != 0) |
116 | inferior_appeared (inf, pid); | |
a562dc8f | 117 | |
b77209e0 PA |
118 | return inf; |
119 | } | |
120 | ||
121 | struct inferior * | |
122 | add_inferior (int pid) | |
123 | { | |
124 | struct inferior *inf = add_inferior_silent (pid); | |
125 | ||
126 | if (print_inferior_events) | |
151bb4a5 PA |
127 | { |
128 | if (pid != 0) | |
129 | printf_unfiltered (_("[New inferior %d (%s)]\n"), | |
130 | inf->num, | |
a068643d | 131 | target_pid_to_str (ptid_t (pid)).c_str ()); |
151bb4a5 PA |
132 | else |
133 | printf_unfiltered (_("[New inferior %d]\n"), inf->num); | |
134 | } | |
b77209e0 PA |
135 | |
136 | return inf; | |
137 | } | |
138 | ||
a79b8f6e | 139 | void |
7a41607e | 140 | delete_inferior (struct inferior *todel) |
b77209e0 PA |
141 | { |
142 | struct inferior *inf, *infprev; | |
b77209e0 PA |
143 | |
144 | infprev = NULL; | |
145 | ||
146 | for (inf = inferior_list; inf; infprev = inf, inf = inf->next) | |
6c95b8df | 147 | if (inf == todel) |
b77209e0 PA |
148 | break; |
149 | ||
150 | if (!inf) | |
151 | return; | |
152 | ||
08036331 PA |
153 | for (thread_info *tp : inf->threads_safe ()) |
154 | delete_thread_silent (tp); | |
4a92f99b | 155 | |
7e1789f5 PA |
156 | if (infprev) |
157 | infprev->next = inf->next; | |
158 | else | |
159 | inferior_list = inf->next; | |
160 | ||
76727919 | 161 | gdb::observers::inferior_removed.notify (inf); |
a79b8f6e | 162 | |
7a41607e SM |
163 | /* If this program space is rendered useless, remove it. */ |
164 | if (program_space_empty_p (inf->pspace)) | |
165 | delete_program_space (inf->pspace); | |
ef3f321b | 166 | |
0550c955 | 167 | delete inf; |
ef3f321b SM |
168 | } |
169 | ||
6c95b8df PA |
170 | /* If SILENT then be quiet -- don't announce a inferior exit, or the |
171 | exit of its threads. */ | |
172 | ||
173 | static void | |
174 | exit_inferior_1 (struct inferior *inftoex, int silent) | |
175 | { | |
176 | struct inferior *inf; | |
6c95b8df PA |
177 | |
178 | for (inf = inferior_list; inf; inf = inf->next) | |
179 | if (inf == inftoex) | |
180 | break; | |
181 | ||
182 | if (!inf) | |
183 | return; | |
184 | ||
08036331 PA |
185 | for (thread_info *tp : inf->threads_safe ()) |
186 | { | |
187 | if (silent) | |
188 | delete_thread_silent (tp); | |
189 | else | |
190 | delete_thread (tp); | |
191 | } | |
6c95b8df | 192 | |
76727919 | 193 | gdb::observers::inferior_exit.notify (inf); |
6c95b8df PA |
194 | |
195 | inf->pid = 0; | |
9ab8741a | 196 | inf->fake_pid_p = false; |
ef4a3395 PA |
197 | inf->priv = NULL; |
198 | ||
6c95b8df PA |
199 | if (inf->vfork_parent != NULL) |
200 | { | |
201 | inf->vfork_parent->vfork_child = NULL; | |
202 | inf->vfork_parent = NULL; | |
203 | } | |
68c9da30 PA |
204 | if (inf->vfork_child != NULL) |
205 | { | |
206 | inf->vfork_child->vfork_parent = NULL; | |
207 | inf->vfork_child = NULL; | |
208 | } | |
8cf64490 | 209 | |
68c9da30 | 210 | inf->pending_detach = 0; |
85046ae2 | 211 | /* Reset it. */ |
ee841dd8 | 212 | inf->control = inferior_control_state (NO_STOP_QUIETLY); |
66452beb PW |
213 | |
214 | /* Clear the register cache and the frame cache. */ | |
215 | registers_changed (); | |
216 | reinit_frame_cache (); | |
6c95b8df PA |
217 | } |
218 | ||
219 | void | |
00431a78 | 220 | exit_inferior (inferior *inf) |
6c95b8df | 221 | { |
6c95b8df | 222 | exit_inferior_1 (inf, 0); |
6c95b8df PA |
223 | } |
224 | ||
00431a78 PA |
225 | void |
226 | exit_inferior_silent (inferior *inf) | |
227 | { | |
228 | exit_inferior_1 (inf, 1); | |
229 | } | |
230 | ||
bc09b0c1 SM |
231 | /* See inferior.h. */ |
232 | ||
b77209e0 | 233 | void |
bc09b0c1 | 234 | detach_inferior (inferior *inf) |
b77209e0 | 235 | { |
bc09b0c1 SM |
236 | /* Save the pid, since exit_inferior_1 will reset it. */ |
237 | int pid = inf->pid; | |
abbb1732 | 238 | |
3b462ec2 | 239 | exit_inferior_1 (inf, 0); |
b77209e0 PA |
240 | |
241 | if (print_inferior_events) | |
f67c0c91 SDJ |
242 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), |
243 | inf->num, | |
a068643d | 244 | target_pid_to_str (ptid_t (pid)).c_str ()); |
b77209e0 PA |
245 | } |
246 | ||
6c95b8df PA |
247 | void |
248 | inferior_appeared (struct inferior *inf, int pid) | |
249 | { | |
08036331 PA |
250 | /* If this is the first inferior with threads, reset the global |
251 | thread id. */ | |
873657b9 | 252 | delete_exited_threads (); |
08036331 PA |
253 | if (!any_thread_p ()) |
254 | init_thread_list (); | |
255 | ||
6c95b8df | 256 | inf->pid = pid; |
2ddf4301 SM |
257 | inf->has_exit_code = 0; |
258 | inf->exit_code = 0; | |
6c95b8df | 259 | |
76727919 | 260 | gdb::observers::inferior_appeared.notify (inf); |
6c95b8df PA |
261 | } |
262 | ||
82f73884 PA |
263 | void |
264 | discard_all_inferiors (void) | |
265 | { | |
08036331 PA |
266 | for (inferior *inf : all_non_exited_inferiors ()) |
267 | exit_inferior_silent (inf); | |
82f73884 PA |
268 | } |
269 | ||
6c95b8df | 270 | struct inferior * |
b77209e0 PA |
271 | find_inferior_id (int num) |
272 | { | |
08036331 | 273 | for (inferior *inf : all_inferiors ()) |
b77209e0 PA |
274 | if (inf->num == num) |
275 | return inf; | |
276 | ||
277 | return NULL; | |
278 | } | |
279 | ||
280 | struct inferior * | |
5b6d1e4f | 281 | find_inferior_pid (process_stratum_target *targ, int pid) |
b77209e0 | 282 | { |
6c95b8df PA |
283 | /* Looking for inferior pid == 0 is always wrong, and indicative of |
284 | a bug somewhere else. There may be more than one with pid == 0, | |
285 | for instance. */ | |
286 | gdb_assert (pid != 0); | |
287 | ||
5b6d1e4f | 288 | for (inferior *inf : all_inferiors (targ)) |
b77209e0 PA |
289 | if (inf->pid == pid) |
290 | return inf; | |
291 | ||
292 | return NULL; | |
293 | } | |
294 | ||
c9657e70 SM |
295 | /* See inferior.h */ |
296 | ||
297 | struct inferior * | |
5b6d1e4f | 298 | find_inferior_ptid (process_stratum_target *targ, ptid_t ptid) |
c9657e70 | 299 | { |
5b6d1e4f | 300 | return find_inferior_pid (targ, ptid.pid ()); |
c9657e70 SM |
301 | } |
302 | ||
32990ada | 303 | /* See inferior.h. */ |
6c95b8df PA |
304 | |
305 | struct inferior * | |
306 | find_inferior_for_program_space (struct program_space *pspace) | |
307 | { | |
08036331 | 308 | struct inferior *cur_inf = current_inferior (); |
32990ada | 309 | |
08036331 PA |
310 | if (cur_inf->pspace == pspace) |
311 | return cur_inf; | |
6c95b8df | 312 | |
08036331 PA |
313 | for (inferior *inf : all_inferiors ()) |
314 | if (inf->pspace == pspace) | |
315 | return inf; | |
6c95b8df PA |
316 | |
317 | return NULL; | |
318 | } | |
319 | ||
b77209e0 PA |
320 | struct inferior * |
321 | iterate_over_inferiors (int (*callback) (struct inferior *, void *), | |
322 | void *data) | |
323 | { | |
08036331 PA |
324 | for (inferior *inf : all_inferiors_safe ()) |
325 | if ((*callback) (inf, data)) | |
326 | return inf; | |
b77209e0 PA |
327 | |
328 | return NULL; | |
329 | } | |
330 | ||
b77209e0 PA |
331 | int |
332 | have_inferiors (void) | |
333 | { | |
08036331 PA |
334 | for (inferior *inf ATTRIBUTE_UNUSED : all_non_exited_inferiors ()) |
335 | return 1; | |
6c95b8df PA |
336 | |
337 | return 0; | |
b77209e0 PA |
338 | } |
339 | ||
8020350c DB |
340 | /* Return the number of live inferiors. We account for the case |
341 | where an inferior might have a non-zero pid but no threads, as | |
342 | in the middle of a 'mourn' operation. */ | |
343 | ||
c35b1492 | 344 | int |
5b6d1e4f | 345 | number_of_live_inferiors (process_stratum_target *proc_target) |
c35b1492 | 346 | { |
8020350c | 347 | int num_inf = 0; |
6c95b8df | 348 | |
5b6d1e4f | 349 | for (inferior *inf : all_non_exited_inferiors (proc_target)) |
5018ce90 | 350 | if (inf->has_execution ()) |
08036331 PA |
351 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) |
352 | { | |
353 | /* Found a live thread in this inferior, go to the next | |
354 | inferior. */ | |
355 | ++num_inf; | |
356 | break; | |
357 | } | |
cd2effb2 | 358 | |
8020350c DB |
359 | return num_inf; |
360 | } | |
361 | ||
362 | /* Return true if there is at least one live inferior. */ | |
363 | ||
364 | int | |
365 | have_live_inferiors (void) | |
366 | { | |
5b6d1e4f | 367 | return number_of_live_inferiors (NULL) > 0; |
6c95b8df PA |
368 | } |
369 | ||
bed8455c DE |
370 | /* Prune away any unused inferiors, and then prune away no longer used |
371 | program spaces. */ | |
6c95b8df PA |
372 | |
373 | void | |
374 | prune_inferiors (void) | |
375 | { | |
908641f5 | 376 | inferior *ss; |
6c95b8df PA |
377 | |
378 | ss = inferior_list; | |
6c95b8df PA |
379 | while (ss) |
380 | { | |
3a3fd0fd | 381 | if (!ss->deletable () |
6c95b8df PA |
382 | || !ss->removable |
383 | || ss->pid != 0) | |
384 | { | |
908641f5 | 385 | ss = ss->next; |
6c95b8df PA |
386 | continue; |
387 | } | |
388 | ||
908641f5 | 389 | inferior *ss_next = ss->next; |
7a41607e | 390 | delete_inferior (ss); |
908641f5 | 391 | ss = ss_next; |
6c95b8df | 392 | } |
6c95b8df PA |
393 | } |
394 | ||
395 | /* Simply returns the count of inferiors. */ | |
396 | ||
397 | int | |
398 | number_of_inferiors (void) | |
399 | { | |
08036331 PA |
400 | auto rng = all_inferiors (); |
401 | return std::distance (rng.begin (), rng.end ()); | |
c35b1492 PA |
402 | } |
403 | ||
db2b9fdd PA |
404 | /* Converts an inferior process id to a string. Like |
405 | target_pid_to_str, but special cases the null process. */ | |
406 | ||
a068643d | 407 | static std::string |
db2b9fdd PA |
408 | inferior_pid_to_str (int pid) |
409 | { | |
410 | if (pid != 0) | |
f2907e49 | 411 | return target_pid_to_str (ptid_t (pid)); |
db2b9fdd PA |
412 | else |
413 | return _("<null>"); | |
414 | } | |
415 | ||
4034d0ff AT |
416 | /* See inferior.h. */ |
417 | ||
418 | void | |
419 | print_selected_inferior (struct ui_out *uiout) | |
420 | { | |
4034d0ff | 421 | struct inferior *inf = current_inferior (); |
53488a6e | 422 | const char *filename = inf->pspace->pspace_exec_filename; |
112e8700 | 423 | |
53488a6e TS |
424 | if (filename == NULL) |
425 | filename = _("<noexec>"); | |
112e8700 SM |
426 | |
427 | uiout->message (_("[Switching to inferior %d [%s] (%s)]\n"), | |
a068643d | 428 | inf->num, inferior_pid_to_str (inf->pid).c_str (), filename); |
4034d0ff AT |
429 | } |
430 | ||
b77209e0 PA |
431 | /* Prints the list of inferiors and their details on UIOUT. This is a |
432 | version of 'info_inferior_command' suitable for use from MI. | |
433 | ||
c82c0b55 MS |
434 | If REQUESTED_INFERIORS is not NULL, it's a list of GDB ids of the |
435 | inferiors that should be printed. Otherwise, all inferiors are | |
436 | printed. */ | |
437 | ||
438 | static void | |
1d12d88f | 439 | print_inferior (struct ui_out *uiout, const char *requested_inferiors) |
b77209e0 | 440 | { |
8bb318c6 | 441 | int inf_count = 0; |
b77209e0 | 442 | |
8bb318c6 | 443 | /* Compute number of inferiors we will print. */ |
08036331 | 444 | for (inferior *inf : all_inferiors ()) |
8bb318c6 | 445 | { |
c82c0b55 | 446 | if (!number_is_in_list (requested_inferiors, inf->num)) |
8bb318c6 TT |
447 | continue; |
448 | ||
449 | ++inf_count; | |
450 | } | |
451 | ||
452 | if (inf_count == 0) | |
453 | { | |
112e8700 | 454 | uiout->message ("No inferiors.\n"); |
8bb318c6 TT |
455 | return; |
456 | } | |
457 | ||
4a2b031d | 458 | ui_out_emit_table table_emitter (uiout, 4, inf_count, "inferiors"); |
112e8700 SM |
459 | uiout->table_header (1, ui_left, "current", ""); |
460 | uiout->table_header (4, ui_left, "number", "Num"); | |
461 | uiout->table_header (17, ui_left, "target-id", "Description"); | |
462 | uiout->table_header (17, ui_left, "exec", "Executable"); | |
b77209e0 | 463 | |
112e8700 | 464 | uiout->table_body (); |
08036331 | 465 | for (inferior *inf : all_inferiors ()) |
b77209e0 | 466 | { |
c82c0b55 | 467 | if (!number_is_in_list (requested_inferiors, inf->num)) |
b77209e0 PA |
468 | continue; |
469 | ||
2e783024 | 470 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
b77209e0 | 471 | |
6c95b8df | 472 | if (inf == current_inferior ()) |
112e8700 | 473 | uiout->field_string ("current", "*"); |
b77209e0 | 474 | else |
112e8700 | 475 | uiout->field_skip ("current"); |
b77209e0 | 476 | |
381befee | 477 | uiout->field_signed ("number", inf->num); |
6c95b8df | 478 | |
112e8700 | 479 | uiout->field_string ("target-id", inferior_pid_to_str (inf->pid)); |
6c95b8df | 480 | |
1f0c4988 | 481 | if (inf->pspace->pspace_exec_filename != NULL) |
112e8700 | 482 | uiout->field_string ("exec", inf->pspace->pspace_exec_filename); |
6c95b8df | 483 | else |
112e8700 | 484 | uiout->field_skip ("exec"); |
6c95b8df PA |
485 | |
486 | /* Print extra info that isn't really fit to always present in | |
487 | tabular form. Currently we print the vfork parent/child | |
488 | relationships, if any. */ | |
489 | if (inf->vfork_parent) | |
490 | { | |
112e8700 | 491 | uiout->text (_("\n\tis vfork child of inferior ")); |
381befee | 492 | uiout->field_signed ("vfork-parent", inf->vfork_parent->num); |
6c95b8df PA |
493 | } |
494 | if (inf->vfork_child) | |
495 | { | |
112e8700 | 496 | uiout->text (_("\n\tis vfork parent of inferior ")); |
381befee | 497 | uiout->field_signed ("vfork-child", inf->vfork_child->num); |
6c95b8df | 498 | } |
b77209e0 | 499 | |
112e8700 | 500 | uiout->text ("\n"); |
b77209e0 | 501 | } |
b77209e0 PA |
502 | } |
503 | ||
2277426b | 504 | static void |
e503b191 | 505 | detach_inferior_command (const char *args, int from_tty) |
2277426b | 506 | { |
2277426b | 507 | if (!args || !*args) |
af624141 | 508 | error (_("Requires argument (inferior id(s) to detach)")); |
2277426b | 509 | |
bfd28288 PA |
510 | number_or_range_parser parser (args); |
511 | while (!parser.finished ()) | |
af624141 | 512 | { |
bfd28288 | 513 | int num = parser.get_number (); |
2277426b | 514 | |
00431a78 PA |
515 | inferior *inf = find_inferior_id (num); |
516 | if (inf == NULL) | |
af624141 MS |
517 | { |
518 | warning (_("Inferior ID %d not known."), num); | |
519 | continue; | |
520 | } | |
2277426b | 521 | |
00431a78 | 522 | if (inf->pid == 0) |
e3ae3c43 PP |
523 | { |
524 | warning (_("Inferior ID %d is not running."), num); | |
525 | continue; | |
526 | } | |
2277426b | 527 | |
00431a78 PA |
528 | thread_info *tp = any_thread_of_inferior (inf); |
529 | if (tp == NULL) | |
af624141 MS |
530 | { |
531 | warning (_("Inferior ID %d has no threads."), num); | |
532 | continue; | |
533 | } | |
2277426b | 534 | |
00431a78 | 535 | switch_to_thread (tp); |
2277426b | 536 | |
af624141 MS |
537 | detach_command (NULL, from_tty); |
538 | } | |
2277426b PA |
539 | } |
540 | ||
541 | static void | |
e503b191 | 542 | kill_inferior_command (const char *args, int from_tty) |
2277426b | 543 | { |
2277426b | 544 | if (!args || !*args) |
af624141 | 545 | error (_("Requires argument (inferior id(s) to kill)")); |
2277426b | 546 | |
bfd28288 PA |
547 | number_or_range_parser parser (args); |
548 | while (!parser.finished ()) | |
af624141 | 549 | { |
bfd28288 | 550 | int num = parser.get_number (); |
2277426b | 551 | |
00431a78 PA |
552 | inferior *inf = find_inferior_id (num); |
553 | if (inf == NULL) | |
af624141 MS |
554 | { |
555 | warning (_("Inferior ID %d not known."), num); | |
556 | continue; | |
557 | } | |
2277426b | 558 | |
00431a78 | 559 | if (inf->pid == 0) |
e3ae3c43 PP |
560 | { |
561 | warning (_("Inferior ID %d is not running."), num); | |
562 | continue; | |
563 | } | |
2277426b | 564 | |
00431a78 PA |
565 | thread_info *tp = any_thread_of_inferior (inf); |
566 | if (tp == NULL) | |
af624141 MS |
567 | { |
568 | warning (_("Inferior ID %d has no threads."), num); | |
569 | continue; | |
570 | } | |
2277426b | 571 | |
00431a78 | 572 | switch_to_thread (tp); |
2277426b | 573 | |
af624141 MS |
574 | target_kill (); |
575 | } | |
2277426b PA |
576 | |
577 | bfd_cache_close_all (); | |
578 | } | |
579 | ||
db2d40f7 PA |
580 | /* See inferior.h. */ |
581 | ||
582 | void | |
583 | switch_to_inferior_no_thread (inferior *inf) | |
584 | { | |
585 | set_current_inferior (inf); | |
586 | switch_to_no_thread (); | |
587 | set_current_program_space (inf->pspace); | |
588 | } | |
589 | ||
2277426b | 590 | static void |
e503b191 | 591 | inferior_command (const char *args, int from_tty) |
2277426b | 592 | { |
6c95b8df PA |
593 | struct inferior *inf; |
594 | int num; | |
2277426b PA |
595 | |
596 | num = parse_and_eval_long (args); | |
597 | ||
6c95b8df PA |
598 | inf = find_inferior_id (num); |
599 | if (inf == NULL) | |
2277426b PA |
600 | error (_("Inferior ID %d not known."), num); |
601 | ||
6c95b8df | 602 | if (inf->pid != 0) |
2277426b | 603 | { |
00431a78 | 604 | if (inf != current_inferior ()) |
6c95b8df | 605 | { |
00431a78 PA |
606 | thread_info *tp = any_thread_of_inferior (inf); |
607 | if (tp == NULL) | |
6c95b8df | 608 | error (_("Inferior has no threads.")); |
2277426b | 609 | |
00431a78 | 610 | switch_to_thread (tp); |
6c95b8df PA |
611 | } |
612 | ||
76727919 | 613 | gdb::observers::user_selected_context_changed.notify |
4034d0ff AT |
614 | (USER_SELECTED_INFERIOR |
615 | | USER_SELECTED_THREAD | |
616 | | USER_SELECTED_FRAME); | |
2277426b | 617 | } |
6c95b8df PA |
618 | else |
619 | { | |
db2d40f7 | 620 | switch_to_inferior_no_thread (inf); |
2277426b | 621 | |
76727919 TT |
622 | gdb::observers::user_selected_context_changed.notify |
623 | (USER_SELECTED_INFERIOR); | |
2277426b PA |
624 | } |
625 | } | |
626 | ||
b77209e0 PA |
627 | /* Print information about currently known inferiors. */ |
628 | ||
629 | static void | |
1d12d88f | 630 | info_inferiors_command (const char *args, int from_tty) |
b77209e0 | 631 | { |
79a45e25 | 632 | print_inferior (current_uiout, args); |
b77209e0 PA |
633 | } |
634 | ||
6c95b8df PA |
635 | /* remove-inferior ID */ |
636 | ||
70221824 | 637 | static void |
0b39b52e | 638 | remove_inferior_command (const char *args, int from_tty) |
6c95b8df | 639 | { |
af624141 MS |
640 | if (args == NULL || *args == '\0') |
641 | error (_("Requires an argument (inferior id(s) to remove)")); | |
6c95b8df | 642 | |
bfd28288 PA |
643 | number_or_range_parser parser (args); |
644 | while (!parser.finished ()) | |
af624141 | 645 | { |
bfd28288 PA |
646 | int num = parser.get_number (); |
647 | struct inferior *inf = find_inferior_id (num); | |
6c95b8df | 648 | |
af624141 MS |
649 | if (inf == NULL) |
650 | { | |
651 | warning (_("Inferior ID %d not known."), num); | |
652 | continue; | |
653 | } | |
654 | ||
3a3fd0fd | 655 | if (!inf->deletable ()) |
af624141 | 656 | { |
eb2332d7 | 657 | warning (_("Can not remove current inferior %d."), num); |
af624141 MS |
658 | continue; |
659 | } | |
8fa067af | 660 | |
af624141 MS |
661 | if (inf->pid != 0) |
662 | { | |
663 | warning (_("Can not remove active inferior %d."), num); | |
664 | continue; | |
665 | } | |
6c95b8df | 666 | |
7a41607e | 667 | delete_inferior (inf); |
af624141 | 668 | } |
6c95b8df PA |
669 | } |
670 | ||
a79b8f6e VP |
671 | struct inferior * |
672 | add_inferior_with_spaces (void) | |
673 | { | |
674 | struct address_space *aspace; | |
675 | struct program_space *pspace; | |
676 | struct inferior *inf; | |
6ecd4729 | 677 | struct gdbarch_info info; |
a79b8f6e VP |
678 | |
679 | /* If all inferiors share an address space on this system, this | |
680 | doesn't really return a new address space; otherwise, it | |
681 | really does. */ | |
682 | aspace = maybe_new_address_space (); | |
564b1e3f | 683 | pspace = new program_space (aspace); |
a79b8f6e VP |
684 | inf = add_inferior (0); |
685 | inf->pspace = pspace; | |
686 | inf->aspace = pspace->aspace; | |
687 | ||
6ecd4729 PA |
688 | /* Setup the inferior's initial arch, based on information obtained |
689 | from the global "set ..." options. */ | |
690 | gdbarch_info_init (&info); | |
691 | inf->gdbarch = gdbarch_find_by_info (info); | |
692 | /* The "set ..." options reject invalid settings, so we should | |
693 | always have a valid arch by now. */ | |
694 | gdb_assert (inf->gdbarch != NULL); | |
695 | ||
a79b8f6e VP |
696 | return inf; |
697 | } | |
6c95b8df | 698 | |
5b6d1e4f PA |
699 | /* Switch to inferior NEW_INF, a new inferior, and unless |
700 | NO_CONNECTION is true, push the process_stratum_target of ORG_INF | |
701 | to NEW_INF. */ | |
702 | ||
703 | static void | |
704 | switch_to_inferior_and_push_target (inferior *new_inf, | |
705 | bool no_connection, inferior *org_inf) | |
706 | { | |
707 | process_stratum_target *proc_target = org_inf->process_target (); | |
708 | ||
709 | /* Switch over temporarily, while reading executable and | |
710 | symbols. */ | |
711 | switch_to_inferior_no_thread (new_inf); | |
712 | ||
713 | /* Reuse the target for new inferior. */ | |
714 | if (!no_connection && proc_target != NULL) | |
715 | push_target (proc_target); | |
716 | ||
717 | printf_filtered (_("Added inferior %d\n"), new_inf->num); | |
718 | } | |
719 | ||
720 | /* add-inferior [-copies N] [-exec FILENAME] [-no-connection] */ | |
6c95b8df | 721 | |
70221824 | 722 | static void |
0b39b52e | 723 | add_inferior_command (const char *args, int from_tty) |
6c95b8df PA |
724 | { |
725 | int i, copies = 1; | |
773a1edc | 726 | gdb::unique_xmalloc_ptr<char> exec; |
ecf45d2c | 727 | symfile_add_flags add_flags = 0; |
5b6d1e4f | 728 | bool no_connection = false; |
6c95b8df | 729 | |
ecf45d2c SL |
730 | if (from_tty) |
731 | add_flags |= SYMFILE_VERBOSE; | |
732 | ||
6c95b8df PA |
733 | if (args) |
734 | { | |
773a1edc | 735 | gdb_argv built_argv (args); |
6c95b8df | 736 | |
773a1edc | 737 | for (char **argv = built_argv.get (); *argv != NULL; argv++) |
6c95b8df PA |
738 | { |
739 | if (**argv == '-') | |
740 | { | |
741 | if (strcmp (*argv, "-copies") == 0) | |
742 | { | |
743 | ++argv; | |
744 | if (!*argv) | |
745 | error (_("No argument to -copies")); | |
746 | copies = parse_and_eval_long (*argv); | |
747 | } | |
5b6d1e4f PA |
748 | else if (strcmp (*argv, "-no-connection") == 0) |
749 | no_connection = true; | |
6c95b8df PA |
750 | else if (strcmp (*argv, "-exec") == 0) |
751 | { | |
752 | ++argv; | |
753 | if (!*argv) | |
754 | error (_("No argument to -exec")); | |
773a1edc | 755 | exec.reset (tilde_expand (*argv)); |
6c95b8df PA |
756 | } |
757 | } | |
758 | else | |
759 | error (_("Invalid argument")); | |
760 | } | |
761 | } | |
762 | ||
5b6d1e4f PA |
763 | inferior *orginf = current_inferior (); |
764 | ||
5ed8105e | 765 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df PA |
766 | |
767 | for (i = 0; i < copies; ++i) | |
768 | { | |
5b6d1e4f | 769 | inferior *inf = add_inferior_with_spaces (); |
6c95b8df | 770 | |
5b6d1e4f | 771 | switch_to_inferior_and_push_target (inf, no_connection, orginf); |
6c95b8df PA |
772 | |
773 | if (exec != NULL) | |
774 | { | |
773a1edc TT |
775 | exec_file_attach (exec.get (), from_tty); |
776 | symbol_file_add_main (exec.get (), add_flags); | |
6c95b8df PA |
777 | } |
778 | } | |
6c95b8df PA |
779 | } |
780 | ||
5b6d1e4f | 781 | /* clone-inferior [-copies N] [ID] [-no-connection] */ |
6c95b8df | 782 | |
70221824 | 783 | static void |
0b39b52e | 784 | clone_inferior_command (const char *args, int from_tty) |
6c95b8df PA |
785 | { |
786 | int i, copies = 1; | |
6c95b8df | 787 | struct inferior *orginf = NULL; |
5b6d1e4f | 788 | bool no_connection = false; |
6c95b8df PA |
789 | |
790 | if (args) | |
791 | { | |
773a1edc | 792 | gdb_argv built_argv (args); |
6c95b8df | 793 | |
773a1edc | 794 | char **argv = built_argv.get (); |
6c95b8df PA |
795 | for (; *argv != NULL; argv++) |
796 | { | |
797 | if (**argv == '-') | |
798 | { | |
799 | if (strcmp (*argv, "-copies") == 0) | |
800 | { | |
801 | ++argv; | |
802 | if (!*argv) | |
803 | error (_("No argument to -copies")); | |
804 | copies = parse_and_eval_long (*argv); | |
805 | ||
806 | if (copies < 0) | |
807 | error (_("Invalid copies number")); | |
808 | } | |
5b6d1e4f PA |
809 | else if (strcmp (*argv, "-no-connection") == 0) |
810 | no_connection = true; | |
6c95b8df PA |
811 | } |
812 | else | |
813 | { | |
814 | if (orginf == NULL) | |
815 | { | |
816 | int num; | |
817 | ||
818 | /* The first non-option (-) argument specified the | |
819 | program space ID. */ | |
820 | num = parse_and_eval_long (*argv); | |
821 | orginf = find_inferior_id (num); | |
822 | ||
823 | if (orginf == NULL) | |
824 | error (_("Inferior ID %d not known."), num); | |
825 | continue; | |
826 | } | |
827 | else | |
828 | error (_("Invalid argument")); | |
829 | } | |
830 | } | |
831 | } | |
832 | ||
833 | /* If no inferior id was specified, then the user wants to clone the | |
834 | current inferior. */ | |
835 | if (orginf == NULL) | |
836 | orginf = current_inferior (); | |
837 | ||
5ed8105e | 838 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df PA |
839 | |
840 | for (i = 0; i < copies; ++i) | |
841 | { | |
842 | struct address_space *aspace; | |
843 | struct program_space *pspace; | |
844 | struct inferior *inf; | |
845 | ||
846 | /* If all inferiors share an address space on this system, this | |
847 | doesn't really return a new address space; otherwise, it | |
848 | really does. */ | |
849 | aspace = maybe_new_address_space (); | |
564b1e3f | 850 | pspace = new program_space (aspace); |
6c95b8df PA |
851 | inf = add_inferior (0); |
852 | inf->pspace = pspace; | |
853 | inf->aspace = pspace->aspace; | |
6ecd4729 PA |
854 | inf->gdbarch = orginf->gdbarch; |
855 | ||
5b6d1e4f PA |
856 | switch_to_inferior_and_push_target (inf, no_connection, orginf); |
857 | ||
6ecd4729 PA |
858 | /* If the original inferior had a user specified target |
859 | description, make the clone use it too. */ | |
860 | if (target_desc_info_from_user_p (inf->tdesc_info)) | |
861 | copy_inferior_target_desc_info (inf, orginf); | |
6c95b8df | 862 | |
6c95b8df PA |
863 | clone_program_space (pspace, orginf->pspace); |
864 | } | |
6c95b8df PA |
865 | } |
866 | ||
b77209e0 PA |
867 | /* Print notices when new inferiors are created and die. */ |
868 | static void | |
869 | show_print_inferior_events (struct ui_file *file, int from_tty, | |
870 | struct cmd_list_element *c, const char *value) | |
871 | { | |
872 | fprintf_filtered (file, _("Printing of inferior events is %s.\n"), value); | |
873 | } | |
874 | ||
e3940304 PA |
875 | /* Return a new value for the selected inferior's id. */ |
876 | ||
877 | static struct value * | |
878 | inferior_id_make_value (struct gdbarch *gdbarch, struct internalvar *var, | |
879 | void *ignore) | |
880 | { | |
881 | struct inferior *inf = current_inferior (); | |
882 | ||
883 | return value_from_longest (builtin_type (gdbarch)->builtin_int, inf->num); | |
884 | } | |
885 | ||
886 | /* Implementation of `$_inferior' variable. */ | |
887 | ||
888 | static const struct internalvar_funcs inferior_funcs = | |
889 | { | |
890 | inferior_id_make_value, | |
891 | NULL, | |
892 | NULL | |
893 | }; | |
894 | ||
6c95b8df PA |
895 | \f |
896 | ||
6c95b8df PA |
897 | void |
898 | initialize_inferiors (void) | |
899 | { | |
06da564e EZ |
900 | struct cmd_list_element *c = NULL; |
901 | ||
6c95b8df PA |
902 | /* There's always one inferior. Note that this function isn't an |
903 | automatic _initialize_foo function, since other _initialize_foo | |
904 | routines may need to install their per-inferior data keys. We | |
905 | can only allocate an inferior when all those modules have done | |
906 | that. Do this after initialize_progspace, due to the | |
907 | current_program_space reference. */ | |
f67c0c91 | 908 | current_inferior_ = add_inferior_silent (0); |
3a3fd0fd | 909 | current_inferior_->incref (); |
6c95b8df PA |
910 | current_inferior_->pspace = current_program_space; |
911 | current_inferior_->aspace = current_program_space->aspace; | |
6ecd4729 PA |
912 | /* The architecture will be initialized shortly, by |
913 | initialize_current_architecture. */ | |
6c95b8df | 914 | |
a3c25011 TT |
915 | add_info ("inferiors", info_inferiors_command, |
916 | _("Print a list of inferiors being managed.\n\ | |
917 | Usage: info inferiors [ID]...\n\ | |
918 | If IDs are specified, the list is limited to just those inferiors.\n\ | |
919 | By default all inferiors are displayed.")); | |
b77209e0 | 920 | |
06da564e | 921 | c = add_com ("add-inferior", no_class, add_inferior_command, _("\ |
6c95b8df | 922 | Add a new inferior.\n\ |
5b6d1e4f | 923 | Usage: add-inferior [-copies N] [-exec FILENAME] [-no-connection]\n\ |
af624141 | 924 | N is the optional number of inferiors to add, default is 1.\n\ |
6c95b8df | 925 | FILENAME is the file name of the executable to use\n\ |
5b6d1e4f PA |
926 | as main program.\n\ |
927 | By default, the new inferior inherits the current inferior's connection.\n\ | |
928 | If -no-connection is specified, the new inferior begins with\n\ | |
929 | no target connection yet.")); | |
06da564e | 930 | set_cmd_completer (c, filename_completer); |
6c95b8df | 931 | |
af624141 MS |
932 | add_com ("remove-inferiors", no_class, remove_inferior_command, _("\ |
933 | Remove inferior ID (or list of IDs).\n\ | |
934 | Usage: remove-inferiors ID...")); | |
6c95b8df PA |
935 | |
936 | add_com ("clone-inferior", no_class, clone_inferior_command, _("\ | |
937 | Clone inferior ID.\n\ | |
5b6d1e4f PA |
938 | Usage: clone-inferior [-copies N] [-no-connection] [ID]\n\ |
939 | Add N copies of inferior ID. The new inferiors have the same\n\ | |
6c95b8df PA |
940 | executable loaded as the copied inferior. If -copies is not specified,\n\ |
941 | adds 1 copy. If ID is not specified, it is the current inferior\n\ | |
5b6d1e4f PA |
942 | that is cloned.\n\ |
943 | By default, the new inferiors inherit the copied inferior's connection.\n\ | |
944 | If -no-connection is specified, the new inferiors begin with\n\ | |
945 | no target connection yet.")); | |
2277426b | 946 | |
af624141 | 947 | add_cmd ("inferiors", class_run, detach_inferior_command, _("\ |
a3c25011 TT |
948 | Detach from inferior ID (or list of IDS).\n\ |
949 | Usage; detach inferiors ID..."), | |
2277426b PA |
950 | &detachlist); |
951 | ||
af624141 | 952 | add_cmd ("inferiors", class_run, kill_inferior_command, _("\ |
a3c25011 TT |
953 | Kill inferior ID (or list of IDs).\n\ |
954 | Usage: kill inferiors ID..."), | |
2277426b PA |
955 | &killlist); |
956 | ||
957 | add_cmd ("inferior", class_run, inferior_command, _("\ | |
958 | Use this command to switch between inferiors.\n\ | |
a3c25011 | 959 | Usage: inferior ID\n\ |
2277426b PA |
960 | The new inferior ID must be currently known."), |
961 | &cmdlist); | |
6c95b8df PA |
962 | |
963 | add_setshow_boolean_cmd ("inferior-events", no_class, | |
964 | &print_inferior_events, _("\ | |
e3abbe7e PW |
965 | Set printing of inferior events (such as inferior start and exit)."), _("\ |
966 | Show printing of inferior events (such as inferior start and exit)."), NULL, | |
6c95b8df PA |
967 | NULL, |
968 | show_print_inferior_events, | |
969 | &setprintlist, &showprintlist); | |
970 | ||
e3940304 | 971 | create_internalvar_type_lazy ("_inferior", &inferior_funcs, NULL); |
b77209e0 | 972 | } |